Open AccessLow‐voltage commercial super‐capacitor response to periodic linear‐with‐time current excitation: a case study
Author(s) -
Elwakil Ahmed S.,
Radwan Ahmed G.,
Freeborn Todd J.,
Allagui Anis,
Maundy Brent J.,
Fouda Mohamed
Publication year - 2017
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
ISSN - 1751-8598
DOI - 10.1049/iet-cds.2016.0139
Subject(s) - waveform , capacitor , excitation , electrical impedance , voltage , decoupling capacitor , control theory (sociology) , time constant , constant phase element , electrical engineering , materials science , physics , acoustics , computer science , engineering , control (management) , electrode , quantum mechanics , artificial intelligence , dielectric spectroscopy , electrochemistry
The response of a commercial super‐capacitor to an applied periodic current excitation in the form of a triangular waveform is investigated in this study. This waveform has a linear‐with‐time variation which enables linear charging and discharging of the device. A model consisting of a linear resistance R s and a constant phase element is used to describe the super‐capacitor impedance and expressions for the voltage across the device, the power, and stored energy are derived using concepts from fractional calculus. Experimental results are shown and an application of the study to super‐capacitor parameter extraction is described.